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PennyRail Word Frequency Analyzer
x402
PennyRail Word Frequency Analyzer is a paid API for AI agents from pennyrail.vercel.app, paid per call via x402, $0.001/call, status unknown (last checked 2026-09-13).
Counts and returns the frequency of each word in a given text string
Price / call$0.001
Success—
StatusUnknown
How this service works
Machine-readable settlement service
Output
Returns a JSON object containing the operation name and a result map where each key is a unique word from the input and its value is the number of times that word appears in the input string.
Example use cases
Blog post keyword density check
“Analyze this blog post draft and tell me how many times each word appears so I can check if I'm overusing any keywords: 'Content marketing is about creating content that resonates. Great content builds trust and content that educates drives traffic.'”
Survey response word analysis
“I've got a batch of customer feedback combined into one big string — can you count the frequency of every word so I can see which themes come up most?”
Literary repetition detection
“Take this excerpt from my essay and count how many times each word is used — I want to spot any words I'm repeating too much before I submit it.”
Technical details
Endpoint
POSThttps://pennyrail.vercel.app/api/f/text.word-frequencyWhen to prefer
Choose this endpoint when you need a quick, cheap ($0.001 USDC) word frequency count from a raw text string without spinning up a local NLP pipeline. Ideal for lightweight text analytics tasks in agent workflows where you want a pay-per-call model rather than maintaining infrastructure.
Side effects
- Missing 'input' field returns a validation error
- Empty string input may return an empty frequency map
- Very large text inputs may time out or exceed payload limits
- Non-string input types may cause a schema validation failure
Input
Schema · Request body
| Field | Type | Description |
|---|---|---|
| inputrequired | string | string |
Output
Schema · Response
| Field | Type | Description |
|---|---|---|
| resultrequired | — | |
| operationrequired | string |
Tags
x402
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